IDT74FCT823CTSOG Equivalent & Substitute Parts

Part Overview

The IDT74FCT823CTSOG is a single-element D-type flip-flop logic integrated circuit with 9-bit configuration, designed for positive edge-triggered applications. Manufactured by Renesas Electronics Corporation, this component features tri-state, non-inverted outputs and operates across a 4.5V to 5.5V supply voltage range. The device is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and new designs requiring compatible functionality.

Substiute Parts

IDT74FCT823CTSOG

Renesas Electronics CorporationIn Stock: 1133IDT74FCT823CTSOG Datasheet

Current PartRFQ

CY74FCT823ATSOC

Texas InstrumentsIn Stock: 1708CY74FCT823ATSOC Datasheet

MFR RecommendedRFQ

CY74FCT823CTSOC

Texas InstrumentsIn Stock: 1946CY74FCT823CTSOC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IDT74FCT823CTSOG are qualified based on the following electrical and mechanical compatibility criteria:

Core Substitution Parameters:

• Identical logic function: Single-element D-type flip-flop with 9-bit configuration
• Matching output type: Tri-state, non-inverted outputs
• Identical trigger mechanism: Positive edge-triggered operation
• Compatible package: 24-SOIC surface mount form factor
• Overlapping or compatible supply voltage range
• Matching operating temperature range: -40°C ~ 85°C

Identified Substitutes:

• CY74FCT823ATSOC (Texas Instruments)
• CY74FCT823CTSOC (Texas Instruments)

Both substitute parts maintain the 74FCT series designation and preserve all functional characteristics required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

CY74FCT823CTSOC is the primary substitute for the IDT74FCT823CTSOG. This Texas Instruments part maintains identical propagation delay specifications (12.5ns @ 5V, 300pF) and preserves the original timing characteristics. The device is currently in active production status, ensuring long-term availability and supply chain stability. ROHS3 compliance supports modern manufacturing and environmental regulatory requirements.

CY74FCT823ATSOC serves as an alternative substitute with active product status and ROHS3 compliance. This part exhibits a longer maximum propagation delay of 20ns compared to the original 12.5ns specification. Selection of this alternative is appropriate only when timing-critical applications do not require the faster propagation delay of the primary substitute.

Both substitute parts operate within a narrower supply voltage range (4.75V ~ 5.25V) compared to the original part (4.5V ~ 5.5V). System designs must verify that supply voltage regulation maintains operation within the substitute part specifications. The Texas Instruments substitutes feature higher output current capability (32mA high, 64mA low) and lower quiescent current (200 µA) relative to the original device, providing improved electrical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT823CTSOC directly replace IDT74FCT823CTSOG in existing designs?

A: Yes. Both parts share identical logic function, output configuration, trigger mechanism, package form factor, and operating temperature range. The CY74FCT823CTSOC maintains the same propagation delay specification, ensuring timing compatibility in existing circuit implementations.

Q: What is the primary difference between CY74FCT823CTSOC and CY74FCT823ATSOC?

A: The CY74FCT823ATSOC exhibits a maximum propagation delay of 20ns compared to 12.5ns for the CY74FCT823CTSOC. Both parts are functionally equivalent in all other electrical and mechanical parameters. Selection depends on whether the application timing budget accommodates the longer delay specification.

Q: Are there supply voltage compatibility concerns when substituting?

A: The substitute parts operate within 4.75V ~ 5.25V, which is narrower than the original part's 4.5V ~ 5.5V range. Verify that system power supply regulation maintains voltage within the substitute part specifications throughout all operating conditions, including transient events and load variations.

Q: Do the substitute parts require PCB layout modifications?

A: No. Both CY74FCT823ATSOC and CY74FCT823CTSOC use the identical 24-SOIC surface mount package with matching pinout and mechanical dimensions. Existing PCB designs require no layout changes for component substitution.

Q: What compliance certifications apply to the substitute parts?

A: Both Texas Instruments substitutes are ROHS3 compliant and carry REACH Unaffected status. Moisture sensitivity level remains at MSL 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.

Q: Why is the original IDT74FCT823CTSOG classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Texas Instruments CY74FCT823 variants remain in active production, providing continued availability and support for applications requiring 74FCT series D-type flip-flop functionality.